SOURCE: My Compaq Presario 3045US cmos battery is bad and
Download Compaq Presario 3000 series laptop service guide,
Scroll from page 83 to 117 for instructions how to access CMOS battery (RTC battery).
SOURCE: Compaq Presario CMOS battery removal?
no need to reset the unit if the no power check your charger firts if working or not, use tester if working,.. check the dc jact connector if ok no problem check th regulator some capactor or transestor, chips on board it means the problem is from the boar..
how to know bios problem if then computer is not powering?
check all power connection.....
SOURCE: how do i replace the cmos battery in the
Testimonial: "thanks but where is the battery exatly I tried to do that locating of the battery. I found where my ram goes a wire attached to motherboard by red and black wires. and a round something covered in a hard black plastic am i supposed to cut plastic open and find battery there? the other panel i removed was where my hard drive was did not find anything there that resembled a battery so was i close/ let me know please can u all send me a pic of location of motherboard battery "
SOURCE: Where is my wireless switch on my Compaq Presario
Right side in the front at the corner ,,little round button ,,it will glow blue when on,,
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